Starscream is the Decepticon air commander in the Transformers films, and this transformation sound comes from Transformers: Dark of the Moon, the third live-action film in the series released in 2011. In the movie he alternates between an F-22 Raptor jet and his humanoid robot form, and the layered mechanical noise became closely associated with his character. Fans later clipped the sound for soundboards and edits, where it still works as shorthand for a fast, high-tech transformation, a jet reveal or a villain taking a new shape.